KR100399591B1 - Method of making case of strut bearing using boards - Google Patents

Abstract

The present invention relates to a method for manufacturing a strut bearing case using a plate, and more particularly, to obtain a manufacturing method of processing a pipe-shaped strut by pressing a plate with a press.

A piercing process (10) for forming pilot holes (4) for positioning the steel plate (2) in a progressive mold process of pressing the iron plate to form a pipe; A LANCE process 20 for cutting into two arc 20-1 shapes facing the insides of the holes 4 formed in the process 10; and the position of the iron plate material 2. Hold the hole 4 drilled in the piercing process (10) to hold the position, set the position, and cut between the arc (20-1) and the arc (20-1) in the shape of an hourglass, etc. A HOUR GLASS process 30 for dividing between (P) and the press target plate (P); and the strut bearing case through the press process for 1, 2, 3 and 4 times of the press target plate (P). Drawing (DRAWING) process 40 to be molded in the form of the one end is blocked in the front pipe (6) to the previous step of; Punching the blocked upper portion of the finished pipe (6) finished the drawing process 40 A piercing (PIERCING) process (50); a burring (60) process for press forming the expanded hole (8) after the piercing process (50) to form a complete elemental pipe (6); After the step (60), the lower side of the small pipe (6) is expanded to have a jaw (9), and the large pipe (14) is formed to have a large diameter, and the expansion pipe (16) is extended to the lower side of the line bisecting the large pipe (14) horizontally. (FLATTENING) process 70 to form a predetermined angle; Half that cuts vertically to form a constant bending base angle (θ) to the lower end portion 22, which is on a line 2/3 of the expansion pipe 16 (half) trimming process (80); and a re-listing process (90), which is completed by restoring the cut pipe (16) to the same diameter as the large pipe (14), and the iron plate material ( 2) a strut using a plate, characterized in that manufactured through a separation process to separate the finished strut bearing case 18 products A separate turning operations the bearing case manufacturing method has excellent effects unnecessary.

Description

Method for manufacturing strut bearing case using plate {Method of making case of strut bearing using boards}

The present invention relates to a method for manufacturing a strut bearing case using a plate material, and more particularly, by completing a thrust bearing case only by pressing a plate material with a press, the lathe processing step, which is a post-process finishing process, is omitted, thereby reducing the mass of automated mass production It relates to a strut bearing case manufacturing method using a plate to be prepared.

In general, the method of manufacturing a strut bearing case applied to an insulated front strut among the parts of a suspension device of a vehicle is performed by turning the edge at an angle to improve the appearance of both ends after the press process after the pipe is formed with a press. After fixing it separately, the work was completed.

However, such a method of manufacturing a strut bearing case using a conventional pipe has a problem in that the pipe is formed by a press machine and the end thereof is turned, and thus, the product cannot be continuously moved and a new process is performed again. There were many difficulties in mass production because of many and difficult continuous operation.

Therefore, the present invention has been devised in view of the above-mentioned conventional problems, and an object of the present invention is to enable continuous work in the manufacture of strut bearing cases using a plate as a plate press machine, and thus a post-treatment process such as lathe work. By omitting the present invention to provide a strut bearing case manufacturing method using a plate that enables automation and mass production.

The present invention for realizing this is a piercing (PIERCING) process for forming the pilot (Pilot) holes to hold the position of the iron plate in the progressive (Progressive) mold process to form a pipe by pressing the steel sheet; forming in the piercing process Lance process of cutting into two arc shapes facing one inside of the hole; In the piercing process of holding the position of the steel sheet, the hole is drilled to set the position and arc and arc HOUR GLASS process of cutting between the press target plate and the press target plate by cutting between them into an hourglass shape, etc .; the strut bearing case through the press process for 1, 2, 3, 4 times of the press target plate Drawing (DRAWING) process to be molded in the form of a conduit tube clogged one side in the previous step of; Piercing (PIERCING) process of drilling the blocked upper portion of the finished pipe is finished the drawing process; A burring process for press-processing to expand the perforated hole to form a complete tube after the piercing process; a tube having a large diameter while extending the lower side of the tube after the burring process and having a jaw; A flattening process of forming a pipe extending at a predetermined angle horizontally dividing horizontally; a half that vertically cuts a lower end portion of the pipe in a 2/3 line to form a constant bending base angle θ; (half) trimming process; through a restriking process that is completed by restoring the cut pipe to the same diameter as the large pipe, and through a separation process of separating the completed strut bearing case from the steel sheet It is to provide a strut bearing case manufacturing method using a plate characterized in that the manufacturing.

1 is a view schematically showing the process of the strut bearing case manufacturing method using the present inventors plate.

2 is a view showing a thrust bearing case subjected to a half trimming process in the strut bearing case manufacturing method using the present inventors.

Explanation of symbols on the main parts of the drawings

10: Piercing process 20: LANCE process

30: HOUR GLASS process 40: Pilot process

50: drawing process 60: piercing process

70: Burring process 80: Flattening process

90: half trimming process 100: restriking process

18: strut bearing case

Hereinafter, a preferred embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a view schematically illustrating a process of a strut bearing case manufacturing method using a plate of the present invention, Figure 2 is a thrust bearing undergoing a half trimming process in the strut bearing case manufacturing method using a plate of the present invention The method for manufacturing a strut bearing case using a plate is largely divided into a piercing process (10), a lance process (20), an outer glass process (30), a drawing process (40), a piercing process (50), and a burring process. 60, the flattening process 70, the half-trimming fixing 80, the wrist-writing process 90, and the separating process. The piercing process 10 is a progressive process of pressing a steel sheet to form a pipe. In the mold process, the pilot holes 4 are drilled to hold the position of the iron plate 2. The LANCE process 20 is a hole 4 formed in the piercing process 10. Inside The HOUR GLASS process 30 is a hole 4 drilled in the piercing process 10 that holds the position of the steel sheet 2, and cuts into two arcs 20-1. ), Set the position, and cut between the arc (20-1) and the arc (20-1) in the shape of an hourglass, etc., to separate between the press target plate (P) and the press target plate (P). The drawing process 40 is formed in the form of a conduit 6 in which one side of the strut bearing case, which is a previous stage of the strut bearing case, is formed through a press process for 1, 2, 3, and 4 presses. The PIERCING process 50 is a process of drilling the blocked upper part of the pipe 6 which has completed the drawing process 5. The BURRING process 60 is after the piercing process 6. The punching hole 8 is expanded to form a complete elementary tube 6. The flattening process 70 extends the lower side of the elementary tube 6 after the burring process 70. It is a process which forms the large pipe | tube 14 formed in large diameter, having the chin 10, and the expansion pipe | tube 16 extended below the line which bisects this large pipe 14 horizontally at a predetermined angle. The trimming process 80 is a process of vertically cutting the lower end of the expansion pipe 16 to form a constant bending base angle θ. The retriking process 100 is a cutting process. The expanded tube 16 is restored to the same diameter as that of the large tube 14 and is completed. The separating process is a process of separating the completed strut bearing case 18 from the iron plate 2. Manufacture of strut bearing case using the same plate is made of piercing forming pilot holes (4) to position the plate (2) in the progressive mold process of pressing the plate to form a pipe. Step 10 and the piercing hole A LANCE process 20 for cutting into two arc 20-1 shapes facing the inside of the holes 4 formed in the tablet 10; and the position of the iron plate 2; Hold the hole 4 drilled in the piercing process (10) to hold the position, set the position, and cut between the arc (20-1) and the arc (20-1) in the shape of an hourglass, etc. A HOUR GLASS process 30 for dividing between (P) and the press target plate (P); and the strut bearing case through the press process for 1, 2, 3 and 4 times of the press target plate (P). Drawing (DRAWING) process 40 to be molded in the form of a conduit (6) clogged one side in the previous step of; Piercing (PIERCING) process of drilling the blocked upper part of the finished pipe (6) the drawing process 40 ( A burring process 60 for press forming the perforated hole 8 after the piercing process 50 to form a complete tube 6; 6) the lower side Flattening to form a large diameter while extending the jaw (9) to form a large diameter and expansion tube (16) extending to the lower side of the line that bisects the large tube 14 horizontally (FLATTENING) A half trimming step 80 of vertically cutting the lower end portion 22, which is on a two-third line of the expansion pipe 16, to form a constant bending base angle θ; The re-stretching process 90 is completed by restoring the cut pipe 16 to the same diameter as the large pipe 14, and separating the completed strut bearing case 18 from the steel sheet 2 The strut bearing case 18 is manufactured through a separation process.

First, in the present invention, the rear end 22 of the strut bearing case 18 is pressed by a press process in a pipe method in which a bearing case is generalized in an insulator front strut part. It is finished with only the lathe work after finishing process can be omitted.

Therefore, the process of automating the press working is facilitated, and the thin metal plate made of a predetermined coil can be operated while feeding the mold into the mold in a sequential transfer type. The housing product is produced, and the bearing case 18 is manufactured without turning a separate process, that is, the rear end 22 to the product.

On the other hand, the PIERCING process 10 is to allow the continuous operation by drilling the iron plate, and to form a hole (Pilot Piercing) hole (8) in order to hold the exact position of the mold during each process.

The outer glass process 30 is a process of removing an unnecessary portion to easily shrink and deform while having a shape of a product to be manufactured by punching between the product and the product.

And the drawing process 40 over the 1, 2, 3, 4 order is gradually made to form over the 1, 2, 3, 4 order to form the strut bearing case 18.

The PIERCING process 50 drills the top of the vessel without holes to form a hole in the pipe.

The BURRING process 60 is a process for widening the drilled hole on the upper end of the container does not need to turn the end.

The FLATTENING process 70 extends the lower side of the elementary tube 6 and has a jaw 9 to form a large diameter tube 14 and an enlarged tube extending horizontally bisecting the large tube 14 horizontally. 16 is formed at an angle.

When the half trimming process 80 is half trimmed to vertically cut the lower end at 2/3 points of the expansion pipe 16, the lower end of the container is inclined at an angle of 45 ° so that turning is unnecessary. There is no need for a separate turning like technology. (The angle is not limited and can be modified by design).

Then, the product is completed by going through the RESTRIKING process 90 for straightening the expansion pipe 16 to the same diameter as the large pipe 14 and separating the strut from the plate.

Through such a process, the plate is produced by the strut bearing case 18 and completed. Of course, the end of the finished strut bearing case does not have to be turned.

In the above continuous production process, a formula that does not need to turn the completed strut bearing case 18 is found and applied through a number of tests.

The FLATTENING process 80 is to produce the end of the bearing case by wireless cutting

The trim diameter can be set by applying an equation.

: Throttle cutting threshold : Inner diameter of strut end

Trim diameter θ: Basic angle of bending

value Product Status shape apply 70 or less Severe wrinkles Not applicable due to quality 71-80 Some wrinkles appear Some quality problem 81-85 Wrinkles appear in 4 directions Simultaneous consideration of mold life and products applied to this product 86-90 Almost no wrinkles Slightly affect the life of mold 91 ~ or more No wrinkle Particular attention should be paid to the selection and design of the molding parts.

In the preferred embodiment shown in Figure 2 the bending angle (θ) in the trim process of the present invention: 45, the inner diameter of the strut bearing case ( ): 42.1, Trim diameter (): 52.3

By expression

= (42.1 / 52.3) × 100 + (90 °-45 °) / 10

= 85

Limit value of the cordless line ( The value is determined so that it is included in the appropriate limit according to Table 1, so that the range does not affect the product and the mold. At this time, trim diameter ( ) Value is set so that no additional turning is required and the end is inclined.

According to the above formula, the FLATTENING process is used to produce the end of the bearing case by wireless cutting.

Apply the formula to the wireless line drawing threshold ( ), The inner diameter of the strut bearing case end ( ), Trim diameter ( ), The value of the basic angle (θ) of the bending can be set.

Knowing the diameter of the product in the above formula, it is also possible to find the trim diameter and the cordless drawing threshold in the reverse order.

On the other hand, wireless cutting is possible in the flattening process 80, trimming process 90 during the flattening process, trimming process, restriking process in the above formula. It can be seen as a preparatory process.

For example, the present invention is not limited to the above-described embodiments, and a person skilled in the art without departing from the gist of the present invention claimed in the claims may be modified. Such changes are intended to fall within the scope of the present invention.

As described through the above embodiments, the strut bearing case can be automated by using a sheet material, and thus, a continuous manufacturing process can be performed using only a press mold process. In addition, the end of the conventional strut bearing case can be fixed at an angle. Since the process of turning can be omitted, it is not necessary to go through the process of turning separately, so the production cost is low, and the production per hour is large, so it is a very useful invention for the automobile parts industry.

Claims (2)

A piercing process (10) for forming pilot holes (4) for positioning the iron plate (2) in a progressive mold process of pressing the iron plate to form a pipe; A LANCE process 20 for cutting into two arc 20-1 shapes facing the inside of the holes 4 formed in the piercing process 10; In the piercing process (10) for holding the position of the iron plate (2) to set the position by holding the hole 4 and sand between the arc (20-1) and the arc (20-1) An outer glass (HOUR GLASS) process 30 for cutting between a press target plate P and a press target plate P by cutting in a clock shape or the like; A drawing process 40 for forming the press target plate P into a form of a conduit 6 in which one side is blocked at a previous stage of the strut bearing case through a press process for 1, 2, 3, and 4 orders; A piercing (PIERCING) process (50) for drilling the blocked upper portion of the finished pipe (6) the drawing process (40); A burring process 60 which press-processes to expand the perforated hole 8 after the piercing process 50 to form a complete tube 6; After the burring process 60, the lower side of the small tube 6 is expanded to have a jaw 9, and the large tube 14 is formed to have a large diameter, and the expansion tube extends to the lower side of the line which bisects the large tube 14 horizontally. A flattening process (70) which forms 16 at a predetermined angle; A half trimming step 80 of vertically cutting the lower end portion 22, which is on a two-third line of the expansion pipe 16, to form a constant bending base angle [theta]; A re-listing process (90) which is completed by restoring the cut pipe (16) to the same diameter as the large pipe (14), and Strut bearing case manufacturing method using a plate material, characterized in that it is manufactured through a separation process to separate the finished strut bearing case (18) product from the iron plate material (2). The method of claim 1, wherein the FLATTENING process is to produce the end of the bearing case by wireless cutting Apply the formula to the wireless line drawing threshold ( ), The inner diameter of the strut bearing case end ( ), Trim diameter ( ), A method for manufacturing a strut bearing case using a plate, characterized in that the value of the basic angle (θ) of the bending can be set.